package org.njo.webapp.root.action.dts.generator.sql;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.njo.webapp.root.action.GenericAction;
import org.njo.webapp.root.model.activity.DTSActivity;

public class DeleteDDLAction extends GenericAction {

    // --------------------------------------------------------- Public Methods

    /**
     * Process the specified HTTP request, and create the corresponding HTTP
     * response (or forward to another web component that will create it).
     * Return an <code>ActionForward</code> instance describing where and how
     * control should be forwarded, or <code>null</code> if the response has
     * already been completed.
     *
     * @param mapping  The ActionMapping used to select this instance
     * @param form     The optional ActionForm bean for this request (if any)
     * @param request  The HTTP request we are processing
     * @param response The HTTP response we are creating
     * @throws Exception if the application business logic throws
     *                   an exception
     */
    public ActionForward execute(ActionMapping mapping,
                                 ActionForm form,
                                 HttpServletRequest request,
                                 HttpServletResponse response) throws Exception {

        DTSActivity dtsactivity = new DTSActivity();
        String[] gen_names = request.getParameterValues("gen_name");
        
        // 验证输入
        if (gen_names==null || gen_names.length==0) {
            addMessage(request, new ActionMessage("dts.field.list.error.required"));
            return (new ActionForward("/processor.dts.gt.sql.listddl.tiles", false));
        }
        
        dtsactivity.removeSQLDDL(gen_names);
        
        // TODO reset property
        return (new ActionForward("/processor.dts.gt.sql.listddl.tiles", false));
    }

}